From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1757087AbXL3HMx (ORCPT ); Sun, 30 Dec 2007 02:12:53 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1755949AbXL3HKx (ORCPT ); Sun, 30 Dec 2007 02:10:53 -0500 Received: from il.qumranet.com ([82.166.9.18]:59477 "EHLO il.qumranet.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751818AbXL3HKo (ORCPT ); Sun, 30 Dec 2007 02:10:44 -0500 From: Avi Kivity To: linux-kernel@vger.kernel.org, kvm-devel@lists.sourceforge.net Subject: [PATCH 05/52] KVM: Add fpu_reload counter Date: Sun, 30 Dec 2007 09:09:51 +0200 Message-Id: <1198998638-22713-6-git-send-email-avi@qumranet.com> X-Mailer: git-send-email 1.5.3.7 In-Reply-To: <1198998638-22713-1-git-send-email-avi@qumranet.com> References: <1198998638-22713-1-git-send-email-avi@qumranet.com> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Measure the number of times we switch the fpu state. Signed-off-by: Avi Kivity --- drivers/kvm/kvm.h | 1 + drivers/kvm/x86.c | 2 ++ 2 files changed, 3 insertions(+), 0 deletions(-) diff --git a/drivers/kvm/kvm.h b/drivers/kvm/kvm.h index 04efe88..a85c590 100644 --- a/drivers/kvm/kvm.h +++ b/drivers/kvm/kvm.h @@ -248,6 +248,7 @@ struct kvm_stat { u32 irq_exits; u32 host_state_reload; u32 efer_reload; + u32 fpu_reload; }; struct kvm_io_device { diff --git a/drivers/kvm/x86.c b/drivers/kvm/x86.c index 923dfd4..c1211e1 100644 --- a/drivers/kvm/x86.c +++ b/drivers/kvm/x86.c @@ -62,6 +62,7 @@ struct kvm_stats_debugfs_item debugfs_entries[] = { { "irq_exits", STAT_OFFSET(irq_exits) }, { "host_state_reload", STAT_OFFSET(host_state_reload) }, { "efer_reload", STAT_OFFSET(efer_reload) }, + { "fpu_reload", STAT_OFFSET(fpu_reload) }, { NULL } }; @@ -2417,6 +2418,7 @@ void kvm_put_guest_fpu(struct kvm_vcpu *vcpu) vcpu->guest_fpu_loaded = 0; fx_save(&vcpu->guest_fx_image); fx_restore(&vcpu->host_fx_image); + ++vcpu->stat.fpu_reload; } EXPORT_SYMBOL_GPL(kvm_put_guest_fpu); -- 1.5.3.7